Clenbuterol EP impurity F HBr CAS 37153-52-9(free)
| CAS No. | 37153-52-9(free) |
| Molecular Formula | C12H18BrClN2O |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Clenbuterol EP impurity F HBr (C12H18BrClN2OHBr) is characterized by an amide group, a hydroxyl group, an ether linkage, chlorine/bromine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Clenbuterol EP impurity F HBr (CAS 37153-52-9(free)), a pharmacopoeial impurity reference standard (molecular formula C12H18BrClN2OHBr, MW 402.56 g/mol) used for the identification and quantification of trace impurities in APIs.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H18BrClN2O HBr |
| Molecular Weight | 402.56 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
Related Clenbuterol Standards
- Clenbuterol impurity 10 (CAS 100-19-6)
- Clenbuterol-d9 (CAS 129138-58-5)
- Clenbuterol-D9 Hydrochloride (CAS 184006-60-8)
- Clenbuterol Hydrochloride (CAS 21898-19-1)
- Clenbuterol impurity 7 (CAS 2383807-57-4)
- Clenbuterol Impurity 2 (CAS 30095-55-7)
- (±)-Clenbuterol (CAS 37148-27-9)
- Clenbuterol EP impurity E (CAS 37148-47-3)
Recommended Standards
- Vonoprazan Impurity 161 (CAS CATO-C4X-1020161)
- Cetirizine EP Impurity E (CAS 682323-77-9)
- Argatroban Impurity 29 (CAS 74863-82-4)
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- methyl 1H-pyrazolo[3,4-b]pyridine-3-carboxylate (CAS 916325-83-2)
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Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com